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15th November 2010, 02:12 PM
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#2 |
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Did it Himself
diyAudio Member
Join Date: Nov 2003
Location: Gloucestershire, England, UK
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Possibly it has an on/off switch, but whether it's 4 on the front and back, or 1 on the front and back, I'm not sure. It is very easy to find out with an ohm meter.
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www.readresearch.co.uk my website for UK diy audio people - designs, PCBs, kits and more |
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15th November 2010, 02:26 PM
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#3 |
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diyAudio Member
Join Date: Nov 2008
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Looks like a standard log. stereo volume control. Pin 4 is the tap for loudness correction, 3=ground, 2=wiper, 1=input.
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16th November 2010, 02:28 AM
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#5 |
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diyAudio Member
Join Date: Aug 2010
Location: Philippines
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the first terminal is the center tap , is the ground terminal the terminal number 4? or 2?... when i turn the pot every slight turn there is like a hole (i dont know the proper term sorry) , i mean there is like an ending in every slight turn.... hope you can helped me guys...
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16th November 2010, 02:32 AM
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#6 |
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diyAudio Member
Join Date: Aug 2010
Location: Philippines
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heres the circuit diagram,.. i think this is in top view, the first terminal with be ground or the last im really confused...
Last edited by aMateRasU; 16th November 2010 at 02:39 AM. Reason: addititonal... |
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16th November 2010, 04:15 AM
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#7 |
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diyAudio Member
Join Date: Mar 2009
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Does it have any labeling that tells you who made that pot or what kind of labeling can you find on that pot ?
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16th November 2010, 04:41 AM
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#9 |
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diyAudio Member
Join Date: Mar 2009
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B can be a log characteristic if it is an old pot. More modern pot are labeled A now for log.
My first asumption was that this is a volume pot with a physilogical loudness control but you say that there are "holes". Does that meen that the pot does not conduct in certain places over the adjustment range ? |
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16th November 2010, 04:42 AM
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#10 |
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diyAudio Member
Join Date: Jun 2010
Location: Sibale Island
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you can check it by a DVM set in resistance.
as per the diagram you supplied it is connected to loudness control.. meaning it is a center tap potentiometer. 1 and 2 is variable resistance while turning the pot 3 and 2 is variable resistance while turning the pot 1 and 3 fixed resistance (total resistance of the pot) 3 and 4 fixed resistance (half of total resistance) 1 and 4 fixed resistance (half of total resistance) in short center tap is fixed resistance. Last edited by coolet; 16th November 2010 at 04:44 AM. |
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Potentiometers
